BRITISH GALLS 
246 
Diptera 
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Fungi 
Lepidop- 
tera 
Diptera 
Lepidop- 
tera 
Diptera 
Capitulum slightly swollen, with a little cone covering 
the larva. 
Phorbia seneciella Meade 840 
Houard, No. 5863. 
Involucres greatly swollen, usually tinted red at the 
base. Larvae gregarious, yellowish-white, living amongst 
the florets. M. E. 
Stictodiplosis jacobaea H. Low 841 
Syn. Diplosis jacobaea H. Low. 
Houard, No. 5865. 
Capitulum greatly swollen, sometimes thrice the normal 
size ; ovoid, fleshy, remaining green. The orange-coloured 
larvae occupy a cavity below the receptacle. 
Cecidomyia sp. 842 
Trail, 1878. Houard, No. 5864. 
Elongated fusiform swellings on the petioles and mid¬ 
ribs, bearing the black sori with dark brown spores. 
August to November. 
Puccinia glomerata Greville 843 
Connold, Plant Galls, fig. 253. 
Plowright, p. 209. 
Senecio aquaticus Hill. hi. Marsh Ragwort. 
Stem swollen. 
Platyptilia isodactyla Zell. 844 
Houard, No. 5861. 
Capitulum swollen. See No. 842. 
Cecidomyia sp. 845 
Trail, 1878. Houard, No. 5858. 
Senecio Sarracenicus Linn. 
Stem swollen. 
Platyptilia isodactyla Zell. 846 
Houard, No. 5851. 
Arctium majus Linn. 44. Common Burdock. 
Seed capsules swollen and deformed. Larvae solitary 
or gregarious. June to August. M. G. 
Trypeta bardanae Schrank 847 
Syn. Tephritis bardanae Sch. 
Connold, Veg. Galls, pi. 124; Plant Galls, fig. 80. 
Houard, No. 5891. 
Cnicus lanceolatus Will. 112. Spear Thistle. 
Floral receptacle hypertrophied, gall hard, plurilocular. 
Trypeta jaceae Rob. Desr. 848 
Houard, No. 5910. 
